Theatrical Bridge On The River Kwai in my car

[MehMan]

Who would've thought of that!

But it's not as enjoyable as the movie was. Well, here's the deal, I have 6n 1998 1.6. All fine and dandy, no mods whatsoever, there are a few patches to fix here and there before I start modding it. One of these small things is the whistling noise!
It's very audible at speeds from 60mph, if I push it to 100mph it sounds like a pressure cooker. In any case, the whislting noise really is apparent at legal speeds and heavy winds. It will really whistle then. It sounds as if there's a small gap in the seals and it's driving me nuts. The door seals are fine however. Can't really put my finger on anything. Does anybody have a clue or what can I do to rule things out or test them?